I made this at a stamp group meeting years ago. I think it was called a flip flap album. All supplies used were from Stampin' Up!
Measurements:
Chipboard cover 7 1/2" x 4 1/2"
Designer paper cut slightly larger to wrap around the edges
Flaps 4" wide x 3 1/2" tall
Spine 7 1/2" long x 7 1/4" tall scored every 3/4"